Finding the Fourth Proportional to 811,687.74, 1,120,162.08 and 449,105.70
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Solution
The fourth proportional to 811,687.74, 1,120,162.08 and 449,105.70 is: 619,784.12
Step by Step Solution
- Step 1: Write the proportion equation
811,687.74 : 1,120,162.08 = 449,105.70 : x - Step 2: Convert to fraction form
811,687.74/1,120,162.08 = 449,105.70/x - Step 3: Cross multiply
811,687.74x = 1,120,162.08 × 449,105.70 - Step 4: Simplify right side
811,687.74x = 503,071,175,051.86 - Step 5: Solve for x
x = 503,071,175,051.86/811,687.74 - Step 6: Final answer
x = 619,784.12
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.